“On Assignment” June 17

Lester Holt embeds with a special community police unit in one of the toughest neighborhoods in the country – Watts, South Los Angeles. In a nation still reeling from Ferguson and Baltimore, what he finds may be a way to resolve the distrust and hate between poor urban communities and the forces sworn to serve and protect them.

Kate Snow reports on a drug industry insider, Steven Francesco, whose son died suddenly from a rare side effect of taking antipsychotics. Francesco’s grief and remorse launched him on a journey to find out more about the system he thought he knew and why it had failed his son.

David Letterman told Tom Brokaw that after his retirement, “I couldn’t care less about late night television,” in the former late night host’s first in-depth TV interview since leaving his show. “I’m happy for the guys – the men and the women, there should be more women,” Letterman said of late night TV. “And I don’t know why they didn’t give my show to a woman. That would have been fine.”